Verifying machine for perforated cards



Feb. 10, 1942. K. A. KNUTSEN VERIFYING MACHNEFOR PERFORATED CARDS Filed oct .I 2o, 1938 6 Sheets-Sheet l www! wvl w www N .I sm. :$5 Sm mmv\w I INVENTOR. KURTANDREAS KNUTEN ATTORNEYS N@ Rh Y tw m2 www. SG.

Feb. 10, 1942. K. A. KNuTsEN VERIFYING MACHINE FOR PERFORATED CARDS Feb. l0,V 1942. K. A. KNUTsEN 2,272,916

VERIFYIG MACHINE FOR PERFORATED CARDS KNUT A. KHUTSEH BY:

oRrlEYs VERIFYING MACHINE FOR PERFORATED CARDS Filed Oct. 20, 1938 6 Sheets-Sheet 4 mvEnTn KNUT A. KNUTSE Afro mix/'Sl Feb. 10, 1942. K, A, KNUTSEN 2,272,916

VERIFYING MACHINE FOR PERFORATED CARDS Filed Oct. 20, 1938 6 Sheets-Sheet 5 if 7d MM); A34 H1 N f" J f @L 7 cz y 45d# HHH 45 J 476?) 75' '.NSL 4m 4 ma) m' 4m 475e 47ml +705 l J :u Hmnlmw i AT'roRneY's Feb. 10, 1942.

K. A. KNUTSEN VERIFYING MACHINE FOR PERFORATED CARDS 6 Smets-sheet 6 Fild oct. 2o, 195s:

KNUTANDREA INVENTOR. y KNUTEN BY MM5.

ATTORNEYS.

Patented Feb. 10, 1942 CARD lKnut Andreas Knutsen, Paris, France Application October, 1938, Serial No. 236,039

In France October 29, 1937 11 Claims.

The present invention relatesto verifying machines for perforated cards or bands. chines comprise a carriage for the step'by step advance of the card, and an escapement mecha' nism controlled by a hand operated keyboard, When a perforated column of the card is in position to be veried, the operator depresses one or a plurality of keys, corresponding to one or a plurality of indications from the document from which the card has kpreviously been perforated. If the key orkeys which have been depressed correspond to the perforations of the column of the card in position to be verified, the escapement will be actuated, the card skips one column, and the verification .of the next column may take place. It, on the contrary, said keys did not correspond to said perforations, the machine is locked. i

An object of the present invention is an improved construction which increases the security and the speed of said machines. According to the invention, the electric operation of the machine necessitates only a. reduced and small number of magnets.

A further object of the invention consists in a marking device which automatically provides every column being veried with the imprint veried Another mark error different from the rst one is applied on the columns veried incorrect.

According to a feature of the invention, said iirst imprint may be omitted on the empty columns of the card. If the machine is blocked according to the verification of a column which is supposed to have no perforation, the imprint error is marked on said column.

Another object of the invention is a verifying machine which will register any wrong operation of the keys by the operator. According to the invention, if the operator operates the keyboard in a way that does not correspond to the periorations of the column which is just being veried. the machine is blocked and it is necessary in order to continue the verification or to eject I the card that the verror key should be depressed whereby the error will be automatically registered.

In the existing machines, when the operator depressed a wrong key, the machine was blocked,

iication, and no trace of said inaccurate operation was left on the card.

For instance, assume that a card contains in the column which is just to be verified, a perioration `2, which is incorrect, and that the operator depresses the key 3 which corresponds to ay correct perforation of said column; consequently the machine will be blocked. vIn the existing machines the operator may then depress the key 2\, which will unlock the machine, and the operator may continue the verification of the next column. No mark on the card will indicate that the card contains an incorrect perforation.

According to the present invention, the machine is blocked as a result of discord between the operation of the keyboard, and the perforation or perforations in the column to beveried, and the machine canonly be unlocked by the operation of a key error. The operation of said key error will apply an imprint incorrect on the column just. being .,veried, indicating that the perforation orperforations of the column did not correspond to the original document, or that the operator has depressed a wrong key.

According to another feature of the invention, if the machine has been blocked during the Verication .of a card, said card Will be ejected separately.

`The invention comprises finally a mechanism -ior automatically verifying empty fields onthe cards.V

A preferred embodimentvof the invention will nowbe described by way of example only, with reference to the accompanying drawings, in which: v

Fig. 1 is a side yview and partly a section of the machine.

Fig. 2 is a plan view of the mechanism in Fig. 1.

Fig. 3 shows in position of rest a part of the ejecting mechanism for the incorrect cards.

Fig. 4 shows in operating position the same mechanism as Fig. 3.

Fig..5 is a longitudinal section of the reading device.

Fig. 6 is a side view of the mechanism shown Fig. 4.

shown Figs. 7, 8 and 9 show the locking mechanism.v

Fig. 10 is a wiring diagram.

Fig. .l1 is a section of the printing device. Fig. l2 is a View of the key error.

Fig. 13 is a side View of themechanism shown Fig. '12.

Fig. 14 is a plan view showing the inking ribbon.

Figs. 15, 16 and 17 show details of the mechanism shown Fig. 7.

Fig. 18 is another form of execution of the wiring diagram.

Figs. 19 and 20 show cards provided with the imprints verified and error.

Figs. 21, 22 and 23 show details of the escapement mechanism.

Fig 24 shows details of the ejecting mechamsm.

Feeding and ejectz'ng mechanism The cards to be veried are introduced in a receptacle Fig. 1. The operator depresses the key 294 Fig. 10 which closes the contact |24 and establishes the circuii-l for th'e motor as explained later. The motor |02 Fig. 1 is fixed on the frame |03. On the motor shaft is xed a toothed wheel |04 which by the intermediate wheel |05 is geared to the wheel |06 fixed on a spindle |01 which may turn in the vertical sides integral with the frame |03.

On the spindle |01 are xed two chain wheels |08 'and |09 each carrying an endless chain ||0 and On the left side both chains surround the two chain wheels ||2 and ||3 xed on the spindle ||4 rotably mounted on the frame. The chain is provided with two studs adapted to engage with the right extremity of lever ||1 pivoting on a pivot ||9 xed on the bar ||8 which may slide horizontally in guides fixed on the frame. The distance between the studs is equal to the half of length of the chain. When the motor turns the chain wheels clockwise, the stud ||5 engages the lever ||1, and thereby pushes the bar ||8 to the left until lever ||1 strikes against the roller |20 fixed on the frame. Roller |20 urges lever ||1 out of engagementI with' the stud of the chain, whereby the movement of the bar is stopped. Just before, the stud |2| on the bar H8 will have rocked the lever |22 about the pivot |23, thereby interrupting the contact |24 in the motor circuit. The lever |22 is maintained in its new position by the pawl |25 pivoting on the stationary pivot |26.

` The momentum of the motor moves the chain a little while after the circuit of the motor has been interrupted. This is of no importance, as the chain wheel may still turn more than half a revolution before the second stud of the chain reaches a position in which it could prevent the return of the bar ||8. Said bar is provided with a bracket |21 which carries a picker |28 adapted to engage with the lower card of the pile |29, in such' a way that when the bar ||8 is moved to theleft, a card will be pushed through the throat |30 until the iront edge of the card reaches the claw |3| pivoting on a pivot |32 integral with the card carriage |33. Said` carriage is further provided with a pusher |34 pivoted at |35 to the carriage, so that a card may raise the pusher and pass underneath. When the card has passed, the pusher rocks downwards because of its own weight, and prevents the card from moving back. The card is thus maintained fixed on the carriage in position for the verification of its rst column. The carriage comprises further the rack 31 provided with rollers which may roll on the frame. .To the right on said rack, a pivot |38 carries a pawl |39 adapted to engage with two studs |49, |4| iixed on the chain ||0. The distance between the studs is equal to the half of the length of the chain. The stud |4| will engage with the pawl |39 and bring the carriage to the right. When the carriage has reached its ceive a new card pushed by the picker |28 which performs the opposite movement, the arm |42 of the pawl |39 strikes with its slant extremity against the roller |43 xed on the frame, thus disengaging the pawl from th'e stud of the chain, whereby the carriage is stopped. A spring |46 pulls constantly the carriage towards the left. The latter however is kept in position by the escapement pawl |45 which is engaged with the rack |31. The verification is eiected as previously described by the depression of the keys of a keyboard, whereby the corresponding contacts may directly be closed or opened as indicated on the wiring diagram Fig. 10. The escapement of th'e carriage may be operated mechanically by the depression of said keys, or by means of a magnet |88 as shown in Fig. 10.

Finally, the keys 2830 283D. 2631 of the keyboard may control the contacts 284er., 284D 2841 which control the selecting magy nets |10a, |10b |101 as indicated also in Fig.

extreme righi; hand position in which it will re` it 10. Each magnet |10a |101 corresponds toa perforation in a column of the card. A magnet |10m controlled by the key 283m and the contact 284m is` provided for column spacing. Wh'en a magnet-l is energised by the depression of a key 2830. 283m, its armature Fig. l, by means of a rod 8| rocks the corresponding lever |82 about thestationary pivot |83. Lever |82 'rocks in its turn the bail |84 about the stationary pivot |83. The pawl |85 pivoting on the pivot-l |86 xed on the bail closes the -contact |81 when the bail is rocked, thus establishing the circuit for the escapement magnet |88. The armature |89 of the latter rocks through the rod |90 th'e bell crank |9| about the xed pivot |92. The two rods |93 and |94 are pivotally connected to the bell crank |9|. The rod |93 is at its upper end pivotally connected on the lever |95 Figs. 1 and 23 which is i'lxed on the spindle |96 which may turn in the bearings |91 and |98 (Fig. 2) xed on the Trame. To the other end of the spindle |96 is fixed a lever |99 which' carries an adjusting screw 200 adapted to push on the lever 20| (Fig. l) pivoting on the pivot 203 fixed on the frame. Solid with lever 20| is a plate 510 which is adjacent to another plate 51| which may turn on a collar on the lever 20|, concentric to the axis of the spindle 203, Fig. 22. A spring 512 fixed with its right end to plate 510 constantly urges plate 51| with its right edge 513 against the adjustable stop 514 xed to the plate 510 (Fig.21). The two plates thus form a unit which moves according to the movement of lever 20|. When the escapement magnet |88 is energised, lever 20| will be rocked counterclockwise and the pawl |45 will be rocked about its pivot 203 by a stud 204 fixed on plate 51| in such a way that the pawl |45 is disengaged from the rack |31. Simultaneously, another stud 205 fixed on plate 510 rocks the pawl 202 about its pivot 206 fixed on the frame whereby the pawl 202 engages with the toothing of the rack |31 and locks this latter. A spring 201 moves th'e pawl |45 a certain distance towards the right when said pawl has been disengaged from the rack, so that when the pawl 45 is again lowered by the clockwise rocking of lever 20|, the pawl |45 `engages with another tooth of the rack |31. The movement of the pawl |45 towards the right is made possible because the hole for the pivoting of the pawl is a little larger than the pivot 203. When the escapement magnet |88 is deenergised and the spring 2|0 draws the armature to its initial position, lever |95 resumes its initial position, releasing lever I The spring 201 then swings the lever 20| clockwise whereby the pawl |45 engages with the rack, and disengages the pawl 202 from the rack. The latter is moved by the spring |46 Fig. 2 one tooth towards the left until it is blocked again by the pawl |45. The card is now in position for the verification of the second column.

The circuit for the escapement magnet |89 is interrupted by the downwards movement of the rod |94 which rocks the lever 2|| pivotally connected to said rod |94. At its other end the lever 2|| is pivotally connected at |86 to the bail |64. Lever |85 carries a projection 2|2 which by a spring is kept against the lower edge of lever 2H. Lever 2|| therefore rocks pawl |85 so that its right extremity disengages from the contact |81, whereby said contact is opened, and the circuit for the escapement magnet interrupted. The contact |81 may only be closed again after the bail |84 and thus the pawl |85 have been returned to their initial positions. However, if by the verication of a column the perforations do not correspond to the keys depressed on the keyboard, the bail will automatically be locked and prevented from returning to its initial position. The contact |81 cannot be closed again and the verifying operation is impossible before the machine is unlatched by the depression of the key error which automatically cau-ses the imprint of a mark error on the card, and the ejection .of said card in a `separate receptacle.

After the verication of each column, the carriage advances one step to the left. When the last column has been veried, `the carriage advances still a certain distance to the left. This additional movement engages the front edge of the card. under a gripper 222 and. initiates. the following operations: removal of the gripper |3|, closing of the contact |24 which controls the return of the carriage, the feeding of a new card, and the ejection of the veried card. During said additional movement, pawl 2|5 strikes with its lower extremity against the stop 2|6 (Fig. 2) iixed on the frame, releasing the gripper I3! which with its arm 2|1 was leaning against said pawl. The spring 2|8 then rocks the gripper |3| so that it is lowered below the track of the cards and the card is free to be ejected. Simultaneously the adjusting screw 2|9 (Fig. 2) fixed on the right extremity of the carriage rocks the pawl Fig. l, so that the latter releases lever |22 which, pulled by the spring 220 closes the contact |24 and thereby the motor circuit. On the bar ||8 is fixed a roller 223 which is in contact with the upper edge of lever 224. This latter pivots on the pivot 225 iixed o-n the frame and its left extremity is provided with a toothed rack 226 constantly meshing with the toothed wheel 221. Said toothed wheel may rotate about the shaft 228 fixed on the frame and is integral with the wheel 229. The wheel 229 is constantly meshing with the wheel 236 loosely mounted on shaft 23| which may freely rotate in bearings integral with the frame. On shaft 23| is xed a disc provided with three notches 233 and a drum 234 carrying three grippers 222 Figs'. 1 and 24. The wheel 232 carries a pivot 235 on which pivots the lever 236. Said lever is-provided with a nose adapted to engage with one of the notches of the disc 232 compelled by the spring 231. A pawl 238 prevents the disc from moving clockwise and insures correct position.

When the bar ||8 is moved towards the left, the roller 223 rocks the lever. 224 about the pivot 225. The toothed rack 226 then rotates wheel 221 which in its turn rotates wheel 230. Lever 236 turns with the wheel 230, engages one of the notches 233, turns the disc 232, and with it the shaft 23| and the'drum A234.

When the drum has turned the movement of the bar 8 is interrupted and the p-awl 238 holds the drum in its new determined position. The grippers 222 are fixedon parts 239 which pivot on the pivots 540 fixed on the drum. Every part 239 is provided with a nose 54| which slides on a cam 542 xed to the frame. A spring (shown Fig. 24) tries to rock the part 239 clockwise, so that the nose 54| pressesv` against the cam 542. When the drum turns, the nose 54| is displaced on the cam 542. The end of the cam permits the part 239 to rock, pulled by said spring. The gripper 222 performs. thereby a movement against the card which is' engaged under the gripper and grips the card against the drum 234. By its rotation, the drum moves the card until the card, in striking with its front edgevthe stop 358 is withheld in the reception receptacle for the cards verified correct (351 Figs. 1 and 24). A spring 266 restores the lever 224 and thu-s the lever 236 toftheir initial positions while the drum is maintained in its new positionY by the pawl 238.

Verification When the card isin position for verification, the column of the card to be verified is located under a contact roller 240 Figs. 5, 11 and 10. Said roller comprises a shaft 24| rotating freely in bearings xed o-n the frame, and a series of conducting rings 242 insulated from each other by rings of insulated material 243, The rings 242 are insulated from the shaft 24| by a tube of insulated material 244. There is one conducting ring 242 above each place of perforation of a column of the card. For each conducting ring 242 there is a brush 245 xed on an insulating plate 246 (Fig. 5) which is itself xed on a bail 241. On each side the bail pivots on two pivots 248 iixed to' the frame. A rod 254 connects the bail to the armature 255 of the magnet 256 so that when the magnet 256 is energized, the brushes `245 are leaning against the roller 240.

Above the roller 240 is placed a second row of brushes 260 fixed on an insulated plate 26|. Each one of the brushes 260 makes contact with a conducting ring 242. When a card is in position of verification, a circuit may be established by a perforation from the lower brush 2li-5 throughl the perforation and the ring 24,2 to the upperbrush. To each brush is connected a conducting wire, according to' the diagramFig. 10.

Opposite the roller are Aplaced two rows ofcontacts Fig. 5 comprising one unit 263 or 264 of contacts for each place of perforation in a column, that is for each key of the keyboard.

Further there are units of contacts for the 214 carries the ,stud 21s which operates irl-the.

same way for the unit 263. A spring'289 fixed to the bail |84 tends to restore'this latter in its initial position Fig. 5 when; thecorresponding magnet |18 is deenergized.

Circuit diagram locked position, the bail cannot close again the contact |81. and a further operation of the machine is impossible. Said conditions correspond to all possible combinations of errors as will be now explained.

Assume that there are two perforations 9 and 1 in the column to be verified and that the operator depresses the two corresponding keys 283a and 283e (Figure 10). The contacts 284a and 284C will be closed and the following circuits established: line 285, contacts 296 and 491, line 286, contacts 2840. and c, magnets |18a and c, line 281, line 289. tacts 211a and c and break the contacts 21911 219e, 218a and 218e. Just afterwards the bail |84 will close the contact |81 and the following circuits are established: line 285, contact 296, contact |81, line 308, upper brush 288e', conducting ring 24211, perforation 9, brush 245a, contact 211a, line 389, contact 218b, brush 260C, ring 242e, perforation 1, brush245c, contact 211e, line 381, contact 218:1, contacts 218e, f, g, h, i, i, lc, l, line 3|5, magnet B, line 289. ment magnet |88 will be energised by the circuit: line 285, contact 295, contact |81, line 3|8, magnet |88, line 289. If there are no other perforations, the magnet A will not be energised.

When the escapement magnet |88 is energised, it breaks the contact |81, which cannot be closed again and no circuit can take place before the bail |84 has been restored to? its initial position. The magnet B has been energised, and the magnet A has not been energised,that is, no blocking of the machine has been effected as will be explained below. However the bail can only be restored to its initial position when the operator has removed his fingers from the keys, so that the contacts 284 are broken, and the magnets' |10. deenergised. The actuation of the escapement magnet causes the displacement of the carriage as previously described, and the card is in position for the verification of ra new column.

Assume now that in the example described, the column verified contained a third perforation, for instance the perforation 6, and that the operator has depressed only the two keys indicated, but not the key 6. The contacts 21811 and 219d will still be closed, the circuit already described through the perforations 9 and 7 would not be changed, and the magnets B and |88 would be energised as described. But the magnet A would have been energised by a circuit which is the same asl previously described through the perforations 9 and 7 until the contact 218e. From the contact 218e, said circuit divides through brush 260d, ring 242d, perforation 6, brush 24501, contact 219d, magnet A, line 289. The magnet A which is of a rapid working type will block bail |84, as will be explained later, so that said bail cannot be restored to its Said magnets close the con- The escapeinitial position. Suppose inthe above example that the perforation 9 did not exist in the column to be verified. The circuit through the perforations 9 and 7 cannot take place and the magnet B is not actuated which involves the locking of the bail |84. No change occurs in the working of the escapement mechanism and the card remains locked inthe position of verification of a new column.

Suppose further that in the above example there is no perforation in the column and that the two keys 9 and '1 are depressed. The magnet B will not be energised and the machine will be locked. If there is no perforation in a column to be verified, and the operator depresses the space key 283m, the bail |84 will be rocked and the contact |81 closed. The other contacts remain in their initial positions as indicated Figure 10. The circuit through the escapement magnet will be established as previously described: The magnet B will be energised by the circuit: line 285, contact 296, contact |81, line 300, contacts 218a, b, c, 1c, l, magnet B, line 289. If the operator depresses the space key and another key simultaneously, and there is no perforation in the column to verify, one of the contacts 218 will be broken, magnet B will not be energised, and the machine will be locked. In case that all the cards in a stack of cards to be verified contain fields comprising a plurality of columns, which have no perforations, said fields can be automatically verified. To this effect, the carriage carries a bar 320, Figure l0, which has cut out portions 32| corresponding to the fields' without perforations. On the bar slides the extremity` 322 of a blade 323 of a stationary contact. When the hollow part of the bar arrives below the extremity 322, the contact 324 is closed, and a circuit for the space magnet established. Said circuit will be broken by the contact |881;I every time the escapement magnet |88 is energised, so that the carriage moves automatically, until the verification of the field is finished and the contact 324 is broken by the bar. If there is a perforation in said field of the card, the magnet A will be energised as above described, and the machine will be locked. The bar which must have a determined and distinct shape for each different work, may be replaced bya double sliding contact 380, 38|-Figure l0 fixed on the carriage |33 but electrically insulated fromsaid carriage. The contact 380 slides on a common conductor 362, and the contact 36| on a bar 363 with a multitude of conducting spots. Each spot may be at will, connected to the line 364. This device may replace the parts 328 to 324 and be utilised for all different works.

The circuit for the space magnet is automatically established as follows: on the bail |84 is fixed a stud 3BG-Figure 10 which opens the contact 389 when the bail rocks. On the armature of the space escapement magnet |10m is fixed a stud 39| which opens the contact 388 when the space magnet is energised. The magnet 388 is energised by the following circuit: line 285, contact 296, line 4|0, contact |8817, contacts 389 and 388, magnet 386, line 4||, line 289. Magnet 386 closes contact 385a which establishes the circuit for the magnet 381 which is maintained by its contact 3810,. When the Contact 324 is closed, the space magnet |18m will be energised by the circuit: line 4H), contacts |8811, 38M, 324, space magnet, line 281. The contacts 389 and 388 will be interrupted, but the space magnet will be maintained by said circuit until amaai@ the escapement magnet |88 breaks the contact |881). Simultaneously the contact 381a is broken. After the card has advanced a column, the two contacts 389 and 388 will be closed again, the magnets 386 and 381 will be energised, and if the contact 324 is still closed, the space magnet will be once more energised as above described. The space magnet opens a contact |18ma. The printing magnet 395 will therefore effect the imprint of a mark verified on the card, except when the space magnet is energised.

When the operator depresses the key 294, the contact |24 is closed establishing the circuit through the magnet 292. The contact |24 remains closed (Figures 1 and 10) and the contact.

Locking mechanism The magnet B, Figures 7 and 8, is xed on a plate 339 integral with the frame. The armature 33| is connected through a rod 332 to a lever 333 pivoted at 334. Lever 333 carries a pivot 335 on which pivots the lever 336. A spring 365 pulls the lever 333 against the stop 366. Another spring 331 holds the lever 336 in a determined position bearing with the extremity 338 againsty the lever 333. On a fixed axis 339 are pivoted three pawls 348, 34|, 342. The pawl 340 is normally held in position by the spring 343 with its lower extremity bearing against the armature 344 of the magnet A. The pawl 342 is normally held in position by the spring 345 with its right upper edge against the stop 346. Its upper extremity is always in engagement with the nose 341 of lever 336 When the bail |84 rocks in clockwise direction Fig. 7, and when the-magnet B is not energised, the pawl 342 moved by the spring 345 will engage under the arm 352 fixed with the bail as shown Fig. 7 and locks the bail in said position.

In the case where the magnet A has been energised, the armature 344 has released the pawl 340 so that said pawl moved by the spring 343 with its upper extremity will engage under the lever 352 and lock this latter and the bail |84.

In the case where magnet B has been deenergised before the lever 352 has left its upper position, the nose 341 of lever 336 prevents the blocking of the bail |84 as shown Figure 9.

Unlocking mechanism The pawl 34| carries an arm 348 on which is pivotally connected a rod 349 the lower extremity of which is connected to a lever 350 xed on the shaft 35|. The pawl 34| serves to assure that the key error can only be depressed when the bail |84 is in the locked position, that is the key error cannot be kept depressed during'the veriiication. When said key error is depressed, the shaft 35| will turn a determined angle, causing the rocking of the pawl 34| towards the arm 352 Xed to the bail |84. Lever 355 i'lxed on the shaft 35| also rocks and swings with its curved extremity the pawls 340 and 342 in their positions indicated Figure 8, so that the arm 352 is released which permits the bail to return to its initial position. The lever 340 is at the same time locked by the armature 344.

56| integral with a plate 562 xed on the frame. -7`5 K `on the card during its movement.

On the rod 359 lis fixed anvadjustable part 563 sliding in a slot 564 of the plate 562. A springv 565 holds the key in its upper position. On

shaft 35| is fixed an arm 566 drawn'by a spring 361 against the fixed stop l368. When the operator depresses the key err-or the lower extremity of the rod 359 rocks thel arm 566 and thus turns the shaft 35| which unlocks the mation Figure 11 by the spring 314. On the lever 312 is fixed a stud 315 adapted to engage with the lever 316. This latter pivots on the xed pivot 311, its arm provided with a printing projection adapted to effect a mark on the card. y

When the key error is depressed, the pawl 310 engages with the nose 380 of lever 312 and rocks this lever counterclockwise. When said key is nearly completely depressed, the pawl 310 is disengaged from the nose 386 permitting the spring 314 to swing the lever 312 clockwise. The stud 315 will thereby strike against the lever 316 which with its projection 319 eifects the print ing. In one Inode of execution, an inking ribbon is placed between the card and the projection 319. A mark error 488 is represented on the Figures 19 and 20. The spring 38| returns the lever 316 in the position of Figure 11 with an extremity bearing against the shaft 24|.

The spring 38| is strong enough tocounterbalance the spring 314 holding the lever 312 with its stud 315 against lever 316. When the key error moves upwards pressed by the spring 565 FigurelZ, the pawl 310 may swing and pass the nose 388 and is restored to itsposition shown in Figure l1. After the printing of the mark error the machine is unlocked, and the verification may take place for the other columns of the card, or the operator may depress the key which releases the carriage for the immediate ejection of the card in a separate receptacle. Instead of printing a mark, the projection 319 may effect a special perforation.

During the verification, another mark, re-

spectively 490 Fig. 19 and 489 Fig. 2O will be printed on the lower portion of the card to indicate thatsaid card has been verified. This mark can be a line printed by an inking wheel, rolling Said wheel may be mounted on the shaft 24| Figure 11 or to thev left of said shaft. Said line could also'be printed by repeated typing of a short line for each column. Means are provided to prevent the printing when the. key for the releasing of the carriage will be depressed.

In one mode of execution, the imprint of the lmark verified is elected by a lever 393 provided with a printing projection.

The mark Verified is printed for each column before the verification for this column, has been completed and before the4 displacement of the carriage has taken place.

The imprint of the mark verified is ,thus effected, even if the column to be verified com- Prises an incorrect perforation.l The mark"veri fled Itherefore does not indicate that the column verified is correct, but only that said column has been verified. The markfverified'in connection with the presence or the absence of a mark error for a determined c-olumn, will indicate that said column has been verified correct or incorrect. Because the locking of the machine is effected only after the verified column has been displaced, the projection 319 for the imprint of the mark error is placed corresponding to the column which has just been verified, whereas the projection 394 for the-imprint of the mark verified is placed corresponding to the column to be veried. The imprint of the mark verified is effected by the magnet 395 Figure 11. armature 396 is by means of a rod 391 connected to lever 398 pivoted about a stationary pivot 399. A spring 400 keeps the lever in the position of rest, bearing against the stop 49|. Lever 393 pivots on the stationary pivot 311 and is held in position of rest bearing against the axis 24| by the spring 405. When magnet 395 is energised, its armature rocks the lever 398 which With its nose 402 rocks the lever 393 so that the projection 394 prints a mark on the card. Magnet 395 Figure is energised simultaneously with the magnet B by a shunt circuit through the contact |10ma. This contact which normally is closed, will be broken when the space magnet |10m is actuated as previously explained.

If the key 408 for the releasing of the carriage is depressed, the printing is not effected, the contact 401 Figure 10 being broken.

Said key 408 further rocks the lever 409 which moves the pawl |45 Figures 10 and 1 out of en gagement with the rack of the carriage, permitting the advance of the carriage.

Ejectiori of incorrect cards On the shaft 35| Figure 12 is xed an arm 420 on which is pivotally connected a rod 42|. Said rod is at its end pivotally connected on the lever 422 Figure 3 pivoting on the shaft 423 which may rock in a bearing 429 Figure 6 xed on the frame. On the shaft 423 Figure 3 are fixed the levers 424 and 425. The latter is adapted to engage with the pawl 426 pivoting on the stationary stud 421. A spring 428 holds the pawl 426 against the nose of lever 425.` When the key error is depressed and the shaft 35| turns adetermined angle, the rod 42| turns the shaft 423 so that the lever 424 may take the position Fig. 4 locked by the pawl 426. When a card now is ejected, it strikes the extremity 430 (Fig. 6) of lever 424, rocks about the stud 43| xed on the drum 234, thereby leaving the gripper 222, and

is directed into a separate receptacle.` 'I'hen a cam 435 fixed on the drum strikes against the arm 436 of pawl 426 Fig. 4, and rocks this latter so that the spring 361 Fig. 12 may return the lever 424 Fig. 3 to its initialposition by means of the lever 566, the shaft 35|, vthe arm 420 and the rod 42|. The next card accordingly will be ejected int-o the ordinary receptacle.

Inlcing ribbon The toothed wheel 440 Figure 11 is integral with the spindle 44| on which is fixed the spool 442 of the ribbon (Fig. 14). Another spool 443 is loosely mounted on the spindle 444. 'I'he ribbon 445 is conducted by a plate 446 above the printing position 441 of the card 448. The ribbon is moved by the wheel 440 which again is moved by the pawl 449 Fig. 1l pivoting on the stud-450 fixed on lever 45|. This lever pivots on the spindle 44| and is held in position by the spring 455 Fig. 1 1 with its nose 453 near the projection 454 of lever4 398. When the imprint of the mark verified has been effected by the The i magnet 395, the lever 398 moved by the spring 75 valysing brush 415a. b.

400 strikes with the projection 454 against the Vlever which rocks, and by means of the pawl 449 advances the wheel 440 one tooth forward. The wheel 440 is held in position `by the pawl 451.

Electric locking Instead of locking the machine by locking the bail |84 as shown on Figures 1 and 8, the machine can be locked by the interruption of the supply circuit of the machine, whereby the mechanical .devices shown Figures '1 and 8 may be omitted. The circuits necessary for such electric locking are indicated by the dotted lines Figure l0. The switch 460 is positioned to connect the battery to line 46|. To start the operation of vthe machine, the key error indicated by T. E.

Figure 10 must be depressed in order to close the contact 462. The magnet 463 is then energised by the circuit: line 46|, contact 462, magnet 463, contact 464a, battery. The magnet 463 closes the contact 4630, which maintains the magnet 463 energised as long as the Contact 464a remains closed. The contact 464:1 remains closed as long as the magnet 464 is not energised. If, during the verification, the magnet B is energised as previously described, the contact Ba is opened every time the contact |88a is closed. Themagnet 464 will therefore not be energised because the magnet B operates quicker than magnet |88, so that the contact Ba Will be interrupted before |08a is closed. Whenthe contact |81 is broken as previously described, no circuit can be established for magnet 464. On the contrary, if the magnet B is not energised, the contact Ba, remains closed, and when the escapement magnet |88 is energised, and the contact |88a is closed, the magnet 464 will be energised by the circuit: line 46|, contact l4630i, contact 465, line 285, contacts 296, 401, |81, |88a, Ba, magnet 464, battery. The magnet 464 when energised opens the contact 464a which breaks the circuit for the magnet 463. The contact 46311 consequently is opened, no circuit can be established, andthe verifying operation is interrupted. The magnet 463 can only be energised again and the machine cuit for the magnet 464 Aand the machinewill 'be locked as above described.V

It is` evidently possibierto combine the` two Imagnets |88 and B in one magnet. In 'this case, 'when a column'isv verified correct the magnet B effects the escapement, and when the column is verified incorrect, no escapement is effected' and the machine remains locked. l i

Alternative mode of execution of the wiring diagram,

Another mode of execution is shown in Figure 18. The contact roller 418 is composed oftwo conducting rings 419a, b, 480a', b for cachan'- Each conducting ring is electrically insulated. There is an v.upper brush 416a, b, 411mb, for each conducting ring, and two-contacts 41|a, b, 413a, by for eachkey .41041, b Vc )ffthe' keyboard. When. a key is de.-

pressed, both contacts are opened. The brush 415a makes contact through a perforation coincidentally with the two conducting rings 4'I9a, 480a. The bail 48| closes the contact |81 when a key is depressed. When a column is verified correct, the magnet B will be energised and the magnet A Will not be energised. If there is a perforation 9 in a column and the corresponding key a, b has been depressed, the following circuit is established when the bail 48| closes the Contact |81: Line 285, contacts 269, |81, line 483, brushes 415e, ring 48M, brushes ll'la, line 484, contacts MIb, Alle, d, etc., 41|Z, magnet B, battery. Simultaneously the following circuit is established: line 285, contacts 269, |81; magnet |88, battery. The magnet A is not energized. The conditions requested at the beginning of the present description are therefore realised, that is, the verification is effective for every possible combination of perforations and depression of y keys.

For instance, if there are two perforations S and T and the operator depresses only the key fia, the magnet A will be energized by the circuit: Battery, contact |8`|, line 483, brushes 415m, perforation, ring 480s., brushes 471cv, line 484, contact Mib, brushes 415e, ring 419e, brushes 416e, contact M3C, line 485, magnet A, battery.

While I have described what I deem to be practical and efficient embodiments of my invention, it\should be well understood that I do not wish to be limited thereto as there might be changes made in the arrangement, disposition and form of the parts without departing from .the principle of my invention as comprehended Y within the scope of the appended claims.

What I claim is:

1. In a machine for verifying perforated cards, an escapement mechanism for moving a card in position for verifying the perforations of the columns, one column after another, a keyboard with a key for each perforation to be verified in a column of the card, a plurality of vcontacts operated by each key, a special contact which is common to said keys and which is operated as an incident to the operation of said firstcontacts, a circuit established by said special contact, said circuit passing in series each of the perforations in the column being verified which correspond to the keys depressed and one of said contacts operated by each key depressed, means for blocking the escapement of the machine if said circuit has not been established, and means for neutralizing said blocking means when said circuit has been established.

2. In a machine for verifying perforated cards, an escapement mechanism for moving a card in position for verifying the perforations of the columns, one column after another, a key for each perforation to be veried in a column of the card, a plurality of contacts operated from each key, a special contact which is common to said keys, said special contact being operated only when one or more of said plurality of contacts have been operated, a circuit passing iny series said special contact, one of said contacts operated by each key depressed and the perforations which correspond to the keys which have been operated, a magnet operated by said circuit, means controlled by said magnet for blocking the machine if said magnet has not been operated during the verification of a column of the card, a second magnet operated by a circuit passing through the perforations which do not correspond to the keys which have been oper- Cil y 7 ated and'means controlled by, said second magnet for blocking the machine if said second magnet has been operated during the verification of a column.

3. In a machine for verifying perforated cards, an escapement mechanism for moving the cards 4into positions for verifying a plurality of perforations in a column of the card, one column after` another, a row of contact members on each side of the card for making contact through the perforations of a column of the card, each contact member inf each row being normally insulated one from the other,la keyboard with a key for each perforation to be verified in a column of the card, a plurality of contacts operated by each key, a circuit passing in series each contact member corresponding to a perforation for each key depressed and one of said plurality of contacts for each said key, a magnet operated by said circuit, and means whereby said magnet controls the operation of said escapement mechanism.

4. In a machine for verifying perforated cards, an escapement mechanism for moving the cards into positions for verifying the perforations in a column of the card, one column after the other, a key for each perforation in a column in position to be Verified, a plurality of contacts operated by each key, a circuit passing in series each of said perforations and one or more of the contacts operated by each key, a magnet actuated by said circuit, and means whereby said magnet controls the operation of said escapement mechanism.

5. In a machine for verifying perforated cards,

van escapement mechanism for moving the cards into positions for verifying a plurality of perforations in a column of the card, one column after another, a keyboard, a key for each perforation to be'veried in a column of the card, one or more contacts operated by each of said keys, said contacts preparing circuits through the perforations of the cards, one of said circuits passing a magnet A and any perforation in the co1- umn being verified which does not correspond to any key depressed, another of said circuits passing a magnet B and in series each of the perforations in the column being verified which corresponds to the keys depressed and one of said contacts operated by `each key depressed, a special contact for establishing one or more of said circuits when said first contacts have been operated, "means for operating the escapement mechanism"l when said magnet B has been operated and said magnet A has not been operated,

and means for'rendering the escapement mechanism inoperative when said magnet B has not been operated or said magnet A has been operated.

6. In a machine for verifying perforated cards, an escapement mechanism for moving the cards step by step into position for verifying the perforations in each column of the card, a keyboard, a key for each perforation to be verified in said column, one or more contacts operated by each key, a bar common to said keys and adapted to oscillate in one direction when one of said keys is depressed, an escapement mechanism, means for operating the escapement mechanism when one of said keys is depressed, means whereby the escapement operation can only be completed when said bar has oscillated in the other direc-` tion returning to its initial position, a circuit prepared by said contacts, which circuit when established passes the perforation or perforations corresponding to the key or keys depressed, an-

other circuit which, when established passes a perforation which does not correspond to any key depressed, two magnets each operated by a different one of Asaid circuits and means whereby said bar will be blocked when a `determined one of said magnets is operated or the other is not operated during the verication of said column.

7. In a machine for verifying record cards, an escapement mechanism for moving the cards step by step into positions for verifying the indications in each column of the card, a keyboard, a key for each indication to be verified in a column of the card, means for verifying the indications in a column when the corresponding keys are depressed, means for automatically marking each column that is verified, means comprising a contact operated by the card carriage when a column of an empty eld of the card is in position to be verified for the automatic verification of the columns of said empty field, and means for the automatic suppression of said marking when one of said columns of said empty field is verified.

8. In a machine for verifying perforated cards, an escapement mechanism for moving the cards lstep by step into positions for verifying the perforaticns of each column of the card, a keyboard, a key for each perforation to be verified in said column, one or more contacts operated from each key, a special contact which is common to said keys and which is operated as an incident to the operation of said rst contacts, a first circuit established by said special contact, `which circuit passes in series the perforations of the column to be veried and further, for each key depressed, passes a contact operated by said key, an escapement magnet controlling the escapement mechanism, said escapement magnet being operated by a circuit established by said special contact, and means for rendering said escapement mechanism inoperative when said first circuit is not established coincidently with the operating of said escapement magnet.

9. In a machine for verifying perforated cards,

an escapement mechanism for moving the cards step by `step into positions for verifying the perforations in each column of the card, a key for each perforation to be verified in said column, one or more contacts operated from each key, a special contact which is common to said keys and which is operated as an incident to the operal tion of said first contacts, a circuit prepared by said rst contacts which circuit when established by said special contact passes the perforation or perforations corresponding to the key or keys depressed, means for operating said escapement mechanism when a key is depressed, and means for rendering the escapement mechanism inoperative when said circuit has not been established, said inoperativeness being effective only when the card has been moved a further step and a new column is in place for verification.

10. In a machine for verifying perforated cards, an escapement mechanism for moving the cards step by step into positions for verifying the perforations in each column of the card, a key for each perforation to be veried in said column, one or more contacts operated from each key, a special contact which is common to said keys and which is operated as an incident to the operation of said first contacts, a circuit prepared by said rst contacts which circuit when established by said special contact passes the perforation or perforations corresponding to the key or keys depressed, means for operating said escapement mechanism when a key is depressed, means for rendering the escapement mechanism inoperative when said circuit has not been established, said inoperativeness being effective only when the card has been moved a further step and anew column is in place for verification, and means for the automatic marking of every column veried, also when this column is verified incorrect.

1l. In a machine for verifying perforated cards, an escapement mechanism for moving the cards step by step into positions for verifying the perforations in each column of the card, a key for each perforation to be veried in said co1- umn, one or more contacts operated from each key, a special contact which is common to said keys and which is operated as an incident to the operation of said first contacts, a circuit prepared by said rst contacts which circuit when established by said special contact passes the perforation or perforations corresponding to the key or keys depressed, means for operating said escapement mechanism when a key is depressed,

, means for rendering the escapement mechanism inoperative when said circuit has not been .established, a special error key, means for marking in a determined column ofthe card a special mark error when said key is depressed, and means whereby an escapement render inoperative can be rendered operative when said error key is depressed.

KNUT A. KNUTSEN. 

